Plz where was the inca civilization located? a. in and around the andes mountains of south america. b. central america in southern mexico. c. the caribbean islands. d. the central valley of mexico.

the Incas incorporated a large portion of western South America, centered on the Andean Mountains. It’s safe to say it’s A

A. In and around the Andes mountains of South America.

worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)